g- owan



(N0 MOdeL) 3 Sheets-Sheet 1.

J. H. GOWAN.

GAB. WHEELBORING ANDTRUING MACHINE. -No'..285,123. Patented Sept. 18, 1883.

'No Model.)

3 Sheets-Sheet 2. J. H. GUWAN. Y

CAR WHEEL BORING AND TRUING MACHINE. 128.

Patented Sept. 18

(No Model.) s sheet-sneen 3. J. E. G-oWAN.

GAE .WHEEL BORING AND TEUING MACHINE.

, r oo o 1, m w I m E E m E w, m P Ill W l h|| l Il. f R y E ,J A f/@W m 1N@ /A s b l WU UNITEDl STATES PATENT Ormea JAMES H. GOIVAN, OF CHICAGO, ILLINOIS, ASSIGOR OF A PART TO AUGUS v TUS O. HALL, GEORGE H. PEEK, AND IVILLIAM P. BLACK, ALL OF I SAME PLACE.

CAR-WHEEL BORING AND TRUING nmol-HNE.4

sPEGIFIcATIoN forniig part ef Letters Patent No. 285,123, dated september 18, 1883.

Application filed February 27,1582. (No mollel,) i i To all whom tma/y conce'nl:

Be it known that I, .Lunas HENRY GowAN, ofthe city of Chicago, in the county of Cook and State of Illinois,'have invented an Improved Car-IVheel Boring and Truing Machine, 4of which the following` is a full, clear, and correct description.,

This invention relates to an improvement in ,the preparation of car-wheels for service; and

1o 1t consists in the combination of mechanical parts, hereinafter set forth, which are designed to bore, true, and balance car'wheels prior to being adjusted to their axles, such boring, tru-y ing, and balancing being accomplished by one mchine, at one' operation, and by' one attend- It being an admitted fact that a chilled-iron wheel varies from a true disk by reason of .irl regular shrinkage in castingit is equallya fact 2c that Wheels of every constructionl are nroreor less similarly defective, and that to insure afull mileage therefrom, `and to overcome the rapid wear and tear of the track and rolling stock, the Wheel, before going into service, should be.

.1nade perfectly round, concentric with the axle-bearings, balanced, and free from peripheral defects. To meet such required conditionsl it becomes necessary at the initial point of work in preparing a Wheel for yits axle4 to 3o. grasp and.' hold the same ina manner and by ymechanism differing from the method and mechanism ordinarily employed for holdingV the same, then to do the work of boring and truing-whileit is held in such position. The

usual method of boring a car-wheel is as follows: The WheeLbeing placed upon the bor-V ingmill,- the dogs of a three-dog universal chuck grasp and hold it b`y its tread while the boring-bar works through its hub. The dogs 4o being equidistantly located from the centernofjthe chuck, and moving inwardly at the same rateof' speed,-andthe.whee1 being of variable radii, the dog, antagonizingthere! with at its longest radial point, drives the wheel in the opposite direction until caught by the other dogs, its geometrical centerbeing thereby carried away from the position which it should occupy with reference to the center of the mill and chuck and the center. described by the boring-bar. The hub being bored while thus located i n an incorrect position, the wheel, when pressed upon its axle, instead of being concentric with'the jurnal-bearings and balanced, becomes a cam, which, when at work, is forced to raise vertically at every revolution 4the entirety of the weight of the car, orso t much thereof as may be depending thereon,

for a distance equal to the difference between the longest and shortest radial distance which it is out of truc. In addition to the great damage done to the axle-journals, journal-bearings, body of the ear, and road-bed, resulting from the reciprocating and pounding action thus produced, the brake-slice, when applied to a wheel out of true, is likely to catch it by its longest radial point, locking it rigidly while the car is in motion and compelling it to slide- -upon the track, the effect of which is to cut a fiat spot upon its tread, at or near the point of its shortest radius, of such length as to war- 7o rant and oftentimes necessitate the removal of such .wheel from under the ear, so as to-avoid the checking of the track by the sharp edges of such iiattened spot, and the great and dangerous strain upon the axle, destruction of its j ournaLbearin'gs, and possible breakage of the wheel and wreckage ofthe car under which it is running. If, after pressing the wheel upon its axle, its perimeter should be turned or ground, so as to. make the saine concentric with its axle-journals, the wheel would neces` sarily be A still out of balance, for the reason -that'its rim being of a regular thickness and the wheel describing an oval with relation to its axle center, the turning or grinding tool. wouldremove all that poltion of metal extending outside of a true circumferential line drawn Figs., 5, 6, 7,

V so bored and trued, will .by throwing such irregularities toward the ccn ter, and that if', while held in such position, its perimeter be turned or ground without disturbing the regularity of the diameter of the rim throughout its circlunference, such wheel, be as concentric and is possible to make the same. By the use of' my invention .not only are such essential objects attained,v but it, embodying the requisites of alboringnnill, cargvheel-grinding machine, and tirc-lathe, proves an important economica-l faetor'in the matter of time, labor, shop room, and expense.

In the accompanying drawings, Figure l is a side elevation ot' my machine; Fig. 2, a plan View of same; Fig. if, a s'ide elevation, partly in section; Fig. .L, an cnd'elevation, showing aln'ading-wheels and a boring bar at work 5 enlarged details ofthe chuekiug as evenly balanced as mechanism.

Aisthcbed-p'latc; l,thehcad-stock,l.lumigh --which works a hollow spindle, D', carrying a l sleeve extension,

disk or chuck, C.

D is the tail-stock, in which works a hollow spindle, B", preferably .having a V-shaped bearing -suri'ace, and carrying u. disk 'or chuck, C'. c

E is a carriage supporting a which carries a boring-tool, E".

K is a loose hand-wheel working over the spindle B', being' held longitudinally in position upon said spindle by a collar, M, and being provided on one side ot`- its hub wit-ha the .exterior surface of which is screw threaded.

L isjan intcrnally-threadcd bush, which engages with the threaded su rl'acc ot' the sleeve extension k, isv provi ded with thrust-.collars AZ, and issecured to the head-stock B by suitable jannular grooves adapt-cd to receivesuch colf K'is a handlock-wheel screw-threaded on the inner side. of its hub, and working over the sleevenentension 7c of hand-wheel lK, and between said h'ul-whcelandthe projectingend of .bush L.

L is a hand set-screw working through the` head-stock B and upon the bush L when it is desired to prevent the bush from turning.

G is an abrading-Wheel rotated by the beltpulley G', the spindle of which works in suitable bearings. //g, supported by the slide-restg".

G" is an abrading-wheel rotated by the beltpull'ey G', its sy indle working in bearings g r/, projecting from a pivoted head, I, which is held by the slide-restg"", and operated by the worm I', which engages with a segmental sl idc-rest, E',

gcar'formed on its peripherl J J are hoppcrs located below the abradingwheels'G-G", and are connected by suitableA piping, jj, to an exhaust-fan U.

F is the driving-pulley, keyed to a shaft, l, to which. is also keyed a pinion, f', which meshes with a gear-wheel, F', fixed to the F" is apinion iixed to the end oi' shaft A3,

essaies l which, being driven by engagement with the hub or rim of the driving-pulley F, imparts .motion through the gear-wheel f", keyed to theV other end of said shaft, to the gear-wheel the other end of said shaft 2 meshing with a `gear formed onv 0'; The gear-wheel F"', fixed to the end-of sha 4, is actuated by the driving-pulleyF a gear-wheel keyed to the end ot' shaft 1, the

connected to and operating the carriage E, which carries theboring-tool slide-rest l. "lhe disks or chucks C C' are provided with radial in the slots N which engage by their 'rear faces ,with the usual interiial'dog or' slide block operating mechanism of a chuck. (See Figs.A 5 and 6.)

'To each slideblock is attached a plate,-R, provided at cach end with a are preferably adj ustal l y connected thereto by bolts, f.4 shown, the heads of -which may be made to workin. said grooves, so as to form supplemental anttvi brating bearings for such plates. The dogs, heilig adjnstably connected to the plates R, maybe removed, and longer or shorter dogs substituted therefor, when it is desired to chuck wheels of greater or less diameter. p

The operation of my machine is as follows: Hand set-screw L' is set hard upon the bush L, to prevent the same from turning, hand-wheel K being revolved. Its screw-threaded sleeve extension 7c unscrews from the bush L', and the spindle B' il, loved longitudinally in its bear- .ing B, causing the chuck C to recedeffrom the chuck C'. A car-wheel being elevated to the proper height and'positionwith relation to the chuck C', a reverse revolution 'of the handwheel K causes the spindle B' audits chuck C to advance toward chuck C' until the earwheel H can be caught between the-chucks by -their dogs R'. and universally, and catching ously by the inner side of its rim, preferably ``atsix points, equalize' any radial differences of the set-'screw L' being then removed from against the projecting end ofthe bush,- the machine is put in motion by the pulley F, the spindle B', with its hand-wheels K K', bush L, and chuck C, acting together and being actuated by the pinion f through -theg'earwhcl F', while the chuck GNis simultaneously put in revolution at the same rate of speedby the ing and shafting acting in conjunction therewith E', iscarried for-ward by the carriage E, through the spindle B and its chuck C', to its Work upon the hub of revolving car -Wheel H. The abrading-wheel G the peri niet-er of disk orchuckf shaft Al-,by suitablez'uixiliary mechanism, being y slots N, and parallely thereto with T-grooves N'. j

work ordi nary slide-blocks, O,

The dogs, moving outwardly the wheel rigor-- whichinay exist, and locate the wheel in the correct position for boring. The locking strain.

bush L, andthe lock-wheel K' beingl set hard y or G", or both, being f'", fixed tothe end of shaft 2-,a pinion, f5, at

through the intermediate gear-wheel, F', and" dog, R', which j pulley F through the pinion h', and the gear#A p and the boring-tool E, held by slide-rest esmas l 's then started at work upon the periphery of the carfwheel, all dust arising ltherefrom is drawn intolthe hopper J or hoppers .I J and through the piping jj by the exhaust-fan U. The arrangement of the pivoted head I and its auxiliary mechanism described. admits of the .wheel G being worked at any desired angle' upon the tread or flange of the car-wheel.

While I prefer employing two abradingwheels upon some classes of work, I do not limit myself to the use of such number, as in .truing steel-tired wheels I use a turning-tool to advantage in the slide-rest y in lieu of the abradngwheel G, the abrading-wheel G following it, if desired, as a finishing-tool after therougher work of such turning-tool, my machine being adapted to receive and ,prepare any and all classes of Wheels for their axles. Neither do I limit myself to the exact arrangement of the gearing and' shafting which impartse motion tov the.chueks C. Cl and the' carriage E, as various alterations maybe-made therein without interfering with the essential Vfeatures* of my machine.

Having thus fully described my invention, what I claim as new and original, and desire to secure by Letters Patent, isy

l. The combination of the head and tail stoeks'B D, carrying coacting revolving disks 3o or chucks C C', arranged-and operating substantially as and for the purpesfydescribed.

2. The combination of tailstock D, carrying revolving disk or chuck C', and head-stock B, L carrying revolving and horizontallyfmovable '35 disk or chuck C, arranged and operating sub- -stantially as and for the purpose described.

3. The combination, with the head-stock B and driving mechanisml" f', of the spindle B', hand-wheelsK K', and bush or thrust-bearing L, substantiallyas and for the purpose described.

4. The combination of the headand tail stocks B D, revolving disks or chucks C C', and boring bar or tool E, arranged and operating substantially as and for the purpose described.

5. The combination of the disks or chucks C C and abrading-Wheels G G", substantially as and for the purpose described.

6. The combination of the disks or chucks C C', boring bar or 'tool E, and abradingwheels G G, all arranged andpoperating sub- ,stantially as and for the purpose described.` Y

7. The combination of the head and tail stocks B D, disks or chucks C C', carriage E, 55

and slide-rest g", substantially as and for the purpose described.

8. In combination, the abrading-wheel G", movable disk I, provided with peripheral teeth, and the worm I', for operating the same, substantially as and for the purpose described.

9. In combination,the head and tail stocks B D, disks C C', abrading-Wheels G G", hoppers J J, exhaust-fan U, and a suitable system of piping for connecting said hoppers and fan, substantially as and for the purpose described.

10. The duplex dog-plate R, provided at cach end with a dog, 1t', substantially as and forithe purpose described.

JAMES HENRY GOWAN.

Witnesses:

LoUIs DANZIGER, K. Cowen. 

